Electric fan



FIG. 1 shows a three-quarter front perspective view of an electric fan;

FIG. 2 shows a full front view of the ornamental design of a fan;

FIG. 3 shows a full rear view of the ornamental design of a fan;

FIG. 4 is a side view of the ornamental design of a fan, the opposite side being a mirror image of that shown;

FIG. 5 shows a top view of the ornamental design of a fan;

FIG. 6 shows a bottom view of the ornamental design of a fan; and,

FIG. 7 is a side view of the ornamental design of a fan, in an upward filted position, the opposite side being a mirror image of that shown. 

The ornamental design for an electric fan as shown and described. 